The government is unresponsive to the needs of the little man. Under 5' 7", it is impossible to get your congressman on the phone.
We approach nonfiction at a much different level than we approach fiction or poetry or drama: that there's almost no room for metaphor. We expect the "I" in any nonfiction text to be an autobiographical "I" when there is a history in the essay of the "I" being a persona.